SeanHatch
New Member
I have a couple of questions about boost converters. I just designed one, tested it, and it works, but not perfectly.
First, the transfer function is NOT 1/(1-D). It's relatively close, but not exact. Is this to be expected? It is about 10 - 15% off, on average. It's really ok though, since the conroller works it out anyway. As long as there's no other side effects.
Second, the transfer function seems to depend on the output impedance.
And, I'm using this boost converter to drive another boost converter. So how do I find the input impedance of the second boost converter? Doesn't it depend on the state of the internal switches?
Thanks;
Sean
First, the transfer function is NOT 1/(1-D). It's relatively close, but not exact. Is this to be expected? It is about 10 - 15% off, on average. It's really ok though, since the conroller works it out anyway. As long as there's no other side effects.
Second, the transfer function seems to depend on the output impedance.
And, I'm using this boost converter to drive another boost converter. So how do I find the input impedance of the second boost converter? Doesn't it depend on the state of the internal switches?
Thanks;
Sean